Texas Instruments CD74ACT374M96

Overview

CD74ACT374M96 from Texas Instruments is an octal D-type positive-edge-triggered flip-flop with 3-state outputs, designed for bus-oriented digital systems. It features ±24 mA output drive, 5 V supply operation (4.5–5.5 V), 10.2 ns typical propagation delay (t_PLH/t_PHL), and operates across –55°C to +125°C. It is used in industrial control backplanes and microcontroller I/O expansion where high-speed data latching and bus isolation are required.

For engineers reviewing the CD74ACT374M96 datasheet, CD74ACT374M96 pinout, CD74ACT374M96 application, or CD74ACT374M96 equivalent, key selection criteria include 3-state enable timing (t_PLZ/t_PHZ = 13.2 ns), TTL-compatible input thresholds (V_IL = 0.8 V, V_IH = 2.0 V), output drive capability into 50 Ω transmission lines, and SOIC-20 packaging for space-constrained PCB layouts.

Technical Context

The CD74ACT374M96 implements eight independent D-type latches synchronized to the rising edge of CLK, with a separate active-low output-enable (OE) controlling all eight Q outputs simultaneously. Its ACT-series CMOS process ensures TTL-compatible input levels and fast switching while maintaining low static current (I_CC ≤ 160 μA at 125°C).

Internal logic decouples OE from register operation: data can be loaded or retained while outputs remain in high-impedance state. The device supports simultaneous switching of multiple outputs without bus contention, verified by 50 Ω line-drive capability and controlled VOLP/VOHV transient specs (1 V peak / 4 V valley at 5 V).

Key Specifications

Pinout & Package

CD74ACT374M96 is housed in a 20-pin SOIC (DW) package with 12.8 mm × 10.3 mm footprint and 12.8 mm × 7.5 mm body size. Pin spacing is 1.27 mm (0.05 inch), compliant with JEDEC MS-013.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type latch applications.

Compared with SN74ACT374N and CD74AC374M96, CD74ACT374M96 uniquely combines 5 V–optimized speed (125 MHz), SOIC-20 surface-mount compatibility, and industrial temperature range in a single production-ready package - making it optimal for high-density, high-reliability 5 V digital systems.

Availability

CD74ACT374M96 is available at Aetrix Electronics and suitable for industrial automation backplanes, microcontroller I/O expansion, automated test equipment, and aerospace avionics requiring stable component supply across extended temperature ranges.

Supply support for CD74ACT374M96 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions with over 50 years of high-reliability component development.

CD74ACT374M96 belongs to TI's Advanced CMOS (ACT) logic family, engineered for TTL-compatible performance in industrial and military applications demanding speed, noise immunity, and wide-temperature operation.

FAQ

What is the maximum clock frequency supported by CD74ACT374M96?

CD74ACT374M96 supports a maximum clock frequency of 125 MHz at V_CC = 5 V and T_A = –40°C to +85°C, and 110 MHz across the full –55°C to +125°C range. This is validated by t_W (clock pulse width) ≥ 3.9 ns and f_MAX specifications in Section 4.9 of the datasheet. The CD74ACT374M96 achieves this using ACT-series CMOS with optimized gate delays and balanced rise/fall times.

Does CD74ACT374M96 support 3.3 V operation?

No, CD74ACT374M96 is specified only for 4.5 V to 5.5 V supply operation per Section 4.3 Recommended Operating Conditions. For 3.3 V systems, consider the AC-series variant CD74AC374M96 (1.5 V–5.5 V), which shares pinout and function but has different input thresholds and reduced speed at lower voltages. Using CD74ACT374M96 below 4.5 V may result in undefined logic states or timing violations.

What is the purpose of the OE pin on CD74ACT374M96?

The OE (Output Enable) pin on CD74ACT374M96 is an active-low control that places all eight Q outputs in high-impedance state when asserted high, regardless of CLK or D inputs. It does not affect internal register operation - data can be latched or held while outputs are disabled. This enables safe bus sharing, hot-swap capability, and elimination of external pull-up/down components in multi-driver systems.

Can CD74ACT374M96 drive 50 Ω transmission lines directly?

Yes, CD74ACT374M96 is explicitly characterized for 50 Ω transmission-line drive at +85°C and 75 Ω at +125°C (Section 4.5, Note 2). Its ±24 mA output drive ensures clean signal edges without external termination, provided layout follows controlled-impedance routing guidelines and load capacitance remains ≤ 50 pF. This capability is confirmed by switching tests with CL = 50 pF and VOHV/VOLP transient measurements.

Is CD74ACT374M96 pin-compatible with CD74AC374M96?

Yes, CD74ACT374M96 and CD74AC374M96 share identical SOIC-20 (DW) pinout, pin functions, and mechanical dimensions. Both support the same 20-pin arrangement with OE, CLK, eight D inputs, eight Q outputs, V_CC, and GND in identical locations. However, they differ electrically: CD74ACT374M96 requires 4.5–5.5 V and offers faster timing at 5 V, while CD74AC374M96 operates from 1.5–5.5 V with broader voltage flexibility but lower speed at 5 V.